Update schema-entities.sql

@@ -72,7 +72,7 @@ CREATE TABLE IF NOT EXISTS attribute_kv (
   long_v bigint,
   dbl_v double precision,
   last_update_ts bigint,
-  CONSTRAINT attribute_kv_unq_key UNIQUE (entity_type, entity_id, attribute_type, attribute_key)
+  CONSTRAINT attribute_kv_pkey PRIMARY KEY (entity_type, entity_id, attribute_type, attribute_key)
 );
 
 CREATE TABLE IF NOT EXISTS component_descriptor (
@@ -148,7 +148,7 @@ CREATE TABLE IF NOT EXISTS relation (
     relation_type_group varchar(255),
     relation_type varchar(255),
     additional_info varchar,
-    CONSTRAINT relation_unq_key UNIQUE (from_id, from_type, relation_type_group, relation_type, to_id, to_type)
+    CONSTRAINT relation_pkey PRIMARY KEY (from_id, from_type, relation_type_group, relation_type, to_id, to_type)
 );
 
 CREATE TABLE IF NOT EXISTS tb_user (